pH has a great influence on the availability of the different nutrient elements. Therefore be sure the pH is always in the right range. The best availability range in the substrate is from 5.2- up to 6.2.

EC means Electrical Conductivity. EC is the concentration of salts in the water or nutrient solution. Water quality varies depending on the water source or conditioning (ie. RO water) and should be tested prior to adding nutrients as it may effect the EC of the nutrient solution applied to the plants. Which can then affect plant growth by adding to much or too little.